1. From the Division of Preventive Medicine (P.M.R., C.H.H.), the Cardiovascular Division (P.M.R.), and the Channing Laboratory (M.J.S.), Department of Medicine, Brigham and Women’s Hospital, and the Department of Ambulatory Care and Prevention (C.H.H.), Harvard Medical School, Boston, Mass; the Departments of Nutrition (M.J.S.) and Epidemiology (M.J.S., C.H.H.), Harvard School of Public Health, Boston, Mass; the Laboratory Medicine Division (J.P.M.), Washington University School of Medicine, St Louis,...